'Listen to Me' - Mobile Web Bluetooth and Voice Recognition

'Listen to Me' - Mobile Web Bluetooth and Voice Recognition © GPL3+

A voice controlled prototype home automation system using Arduino/Genuino101 and Mobile Web Bluetooth API remix 'Lend Me Your Ears' project.

  • 16 respects

Components and supplies

Screen shot 2017 02 16 at 2 2fejqs9vfo
MikroE RELAY click
Ph abx00005 iso (1) bavevgguw1
Arduino 101
Screen shot 2017 02 16 at 2 iycvi9jlsg
MikroE Arduino UNO Click Shield
1434509556 android phone color
Android device
Android 6.0 (Marshmallow) or above

Apps and online services

About this project


Started experimenting for the Hackster Live workshop 2017 - using Greg V.’s "Lend me your ears" project as our inspiration. This project will show you how to control relays with an Arduino/Genuino 101 using its’ on-board Bluetooth Low Energy (BLE) capability through the Web Bluetooth API, adding voice recognition library with no special hardware needed.

***WARNING - Do NOT attempt to control any high voltage AC or DC devices or expose the wires of high voltage AC or DC device. Do NOT use any device over 12 volts as this could lead to strong electric shock if used improperly!***

**Hackster is not responsible for any damages or injuries sustained while completing this project.**

What you will need for this project

The original hack requires a Mac with Yosemite or newer operating system, chromebook, or linux. For chromebook instructions see Greg’s project here.

Android Phone with Chrome Browser

The instructions I'm writing here are for using Mobile Web Bluetooth using Android 6.0 (Marshmallow) Phone or later with Chrome Browser.

  • Android phone must be version 6.0 (Marshmallow or above)
  • Android Chrome Browser needs to be version version 56 above.
  • To check the version, use this URL chrome://version/
  • To enable Mobile Web Bluetooth, make sure that this is enabled chrome://flags/#enable-experimental-web-platform-features
  • I haven't tested on iPhone with Android. Feel free to try it out and let me know if it works for you.

Ubuntu Linux with Chrome Browser

If you don't have an Android phone with version 6.0, you can try out Ubuntu Linux.

  • Create a bootable USB stick on Ubuntu. Read instructions here.
  • Boot your laptop using USB drive. Don't install, just try out Ubuntu
  • Once it boots, Install Chrome
# Download and install BlueZ 5.43 and libreadline7 packages 
wget http://mirrors.kernel.org/ubuntu/pool/main/r/readline/libreadline7_7.0-0ubuntu2_amd64.deb 
wget http://ftp.debian.org/debian/pool/main/b/bluez/bluez_5.43-2_amd64.deb 
sudo dpkg -i libreadline7_7.0-0ubuntu2_amd64.deb 
sudo dpkg -i bluez_5.43-2_amd64.deb 

Update the Script

I updated the script to install bluez_5.43-2_amd64.deb

  • Restart the BlueZ service sudo /etc/init.d/bluetooth restart
  • Go back to chrome and Enable chrome://flags/#enable-experimental-web-platform-features
  • Restart Chrome. Now you're ready.
  • Arduino IDE with Arduino/Genuino 101 installed.

Download Arduino

Download Arduino IDE here.

Once you have downloaded the Arduino IDE, make sure it has the drivers for the Arduino/Genuino 101 by following these steps:

1. Click Tools → Board → Boards manager.

2. Scroll down the list and find the “Intel Curie Boards” by Intel. If it is not installed, click “install” and follow the prompts making sure to allow the app to make changes on your device.

3. Once installed, go to the Arduino IDE, click Tools → Board → Arduino/Genuino 101 at the bottom of the dropdown menu.

If this project made you interested in learning more about Mobile Web Bluetooth, Arduino 101 or remixing projects on Glitch, please click the "Respect Project" button and follow me.


  • I forked Greg's code on Github. Here's the link
  • The sketch is located in the arduino-sketch folder.
  • The mobile website is located in the public folder.

If you just want to test it out without any changes to the Arduino code, here's what you need to do.

  • Click Verify and Upload
  • Using BLE with voice control
  • Click the bluetooth icon and choose the device that matches the local name that you changed in your Arduino code. In this case the default was “relays” so I click “relays” and click pair.
  • Once your device has paired you will see a green “paired” under your device name.
  • Now you have a choice, you can use the pre-coded commands below:
  • RelayOne: relay one, one, lamp, desklamp
  • RelayTwo: relay two, two

If you want to make sure that the web bluetooth is hearing you and capturing your words correctly, turn on the development tools on the right hand side of the screen by going to chrome’s menu→ more tools → developer tools. If you want to see if the Arduino 101 is getting your messages, start the serial monitor with 9600 baud.

You should see the commands received from Android phone to the Arduino 101.

Making it your own

You can customize the website by remixing it and making it your own at: https://glitch.com/edit/#!/charming-gambler

Click on the "charming-gambler" icon → "Remix This". If you want to change the device name, edit the "public/relayClick.js".

Modify this Code

class RelayClick { 
    * customize your project here to reflect the uuid of your service and characteristics. 
   constructor() { 
       this.deviceName = 'relays'; 
       this.serviceUUID = '917649a0-d98e-11e5-9eec-0002a5d5c51b'; 
       this.characteristic1UUID = '917649a1-d98e-11e5-9eec-0002a5d5c51b'; 
       this.device = null; 
       this.server = null; 
       // The cache allows us to hold on to characeristics for access in response to user commands  
       this._characteristics = new Map(); 

Arduino SketChange the device name, service UUID, characteristic1UUID. Make sure it matches Arduino Sketch. Arduino sketch should have the same info.

/* establish BLE service & characteristics */
BLEPeripheral blePeripheral;
BLEService relayService("917649A0-D98E-11E5-9EEC-0002A5D5C51B");
BLECharacteristic relayCharacteristic("917649A1-D98E-11E5-9EEC-0002A5D5C51B", BLEWrite, 5);
// BLEUnsignedCharCharacteristic relayCharacteristic("917649A1-D98E-11E5-9EEC-0002A5D5C51B", BLERead | BLEWrite);
BLEDescriptor relayDescriptor("2902","relay");
void setup() 
 // initiate serial communications for debugging
 Serial.println("click relay example");
  *  BLE initilizations

Good luck! If this project made you interested in learning more about Mobile Web Bluetooth, Arduino 101 or remixing projects on Glitch, please click the "Respect Project" button and follow me.

Feel free to ask questions.



Lendmeyourears enz9kyvsbo


Similar projects you might like

Arduino101 Bluetooth Intertial Measurement Unit (IMU)

Project tutorial by Tom Moxon

  • 6 respects

Android Listen to Me

Project showcase by Gustavo Reynaga

  • 7 respects

Arduino101 Bluetooth Interfacing

Project tutorial by Tom Moxon

  • 13 respects

Arduino Bluetooth Basic Tutorial

by Mayoogh Girish

  • 496 respects
Add projectSign up / Login